Working roll balance for a backed-up rolling mill



H. E. EWART Feb. 2l, 1933.

WORKING ROLL BALANCE FOR A BACKED-UP ROLLING MILL Filed Oct. 2l, 1931INVENTOR l l I 1 I I l WH'NESSES Patented Feb. 21, 1933 UNITED STATESPATENT OFFICE HUBERT E. EWART, 0F MOUNT LEBANON, PENNSYLVANIA, ASSIGNOBTO UNITED ENGINEERING & FOUNDBY PORATION 0F PENNSYLVANIA COMPANY, OFPITTSBURGH, PENNSYLVANIA, A COB- Application led October 21, 1931.Serial No. 570,178.

This invention relates to backedmp rolling mills, and more particularlyto working roll balances therefor.

In a backed-up rolling mill the metal passing between the working rollsforces them against the backing rolls so that the latter are driven bythe frictional contact established therebetween. However, when the millis operating with no material being rolled, there is nothing to forcethe working rolls, particularly the upper one, tightly against thebacking rolls, sults in there not being suiiicient contact between themto enable the former to drive the latter. Consequently, the backingrolls remain substantially motionless while the driven rotating workingrolls grind against them and wear down their faces. This ac tion ischaracteristic of three-high, fourhi h, cluster and other backed-upmills.

t is among the objects of this invention to provide an improved workingroll balance, associated with a casing in which a backing roll isjournalled, for constantly urging a working roll into driving contactwith the backing roll, which balance can be adjusted to vary thepressure of the rolls against each other, and is adapted to facilitateremoval of the working roll from the mill housing.

The invention is illustrated in the accompanying drawing of which Fig. 1is a fragmentary view, partly in cross section, of one end of a rollingmill showing a working roll balance; and Fig. 2 is a sectional viewtaken on line II-II of Fig. 1.

ReferringV to the drawing, a rolling mill housing 1 is rovided at itsend with a window 2 in which a casing 3, having an open- ,ing 4 in itslower portion, is slidably mounted for vertical ad]iistment by screwdowns, not shown. A neck of a backing roll 5 is journalled in thecasing, while a chock 6 with a working roll 7 journalled therein, isslidably mounted for vertical movements in opening 4 of the casing. Theworking roll is thus backed-up by backing roll 5 directly above it.

To constantly urne the working roll into driving contact with thebacking roll when which often re-V no material is being rolled, so thatthe former will not sli against the latter and thereby grind theirfaces, there is provided a working roll balance com rising a.cylindrical hollow sleeve 8 slidab y disposed in a chamber 9 extendingupwardly into casing 3 adjacent the side of chock 6. A stud 10, screwedat its upper end in the casing, projects downwardly through the centerof sleeve 8 which is provided with an inwardly-extending annularshoulder 11. Abutting against the bottom of this shoulder is the upperend of a coil spring 12 held in position by means of a nut 13 threadedon the lower end of stud 10. Washers 14 and 15 are inserted between thespring and shoulder, and between the spring and nut, respectively, toform end bearings for the spring.

The lower end of sleeve 8 is integrally provided with a lug 16projecting horizontally therefrom and adapted to engage the lower faceof chock 6 and support it. `By turning nut 13 up on stud 10, spring 12i'S compressed. which tends to force sleeve 8 upwardly in chamber 9. Asthe lug supports the chock, this upward movement is transmitted to thechock and the working roll journalled therein, the working roll beingthereby urged upwardly into driving contact with the backing roll. Toinsure proper engagement of 1u 16 with chock 6, the latter is providedwith a rabbet 17 in its lower face into which the lug projects. Theproper pressure between the rolls is obtained by turning nut 13 eitherto the right or left to compress or expand the spring. As shown, eachside of each working roll may be provided with a balance constructed asexplained, and it will be understood that the balances are provided atboth lends of working rolls.

W'hen it is desired to remove the work- Working roll can then be pulledlaterally through casings 3 Without interference by the balances. Thereis thus provided an adjustable Working roll balance of simpleconstruction and few parts which can easily be disengaged from a Workingroll to permit its removal from the mill housing.

Accordingr to the provisions of the atent statutes, I have explained theprinciple and operation of my invention, and have illustrated anddescribed what I now consider to be its best embodiment. However, Idesire to have it understood that Within the scope of the appendedclaims, the invention may be practiced otherwise than as specificallyillustrated and described.

I claim:

1. In a rolling mill, the combination with a housing provided with avertically movable casing having a backing roll journalled therein, of achock slidably mounted in said casing, a Working roll joui-nailed insaid chock, and a member yieldingly connected to said casing and Whilethus connected movable to and completely from a position engaging saidchock for urging said Working roll yieldingly into driving contact withsaid backing roll.

2. In a rolling mill, the combination with a housing provided with avertically movable casing having a backing roll journalled therein, of achock slidably mounted in said casing, a working roll journalled in saidchock, a member rotatably mounted in said casing for movements to andfrom engagement with said chock, and means for yieldingly urging saidmember toward said Working roll.

In a rolling mill, the combination with a. housing provided with avertically movable casing having' a backing roll journalled therein, ofa chock slidably mounted in said casing, a working roll journalled insaid chock, a sleeve mounted for angular and vertical movements in saidcasing and provided With a lug Which in one angular position of thesleeve engages said chock, and means for yieldingly connecting saidsleeve to said casing for urging the Working roll into driving contactwith the backing roll.

In testimony whereof, I sign my name.

HUBERT E. EWART.

DISCLAI M E R 1,898,007.-Hubert E. Ewm't, Mount Lebanon, Pa.

A BAcKnn-UP ROLLING MILL. Patent dated February 21, 1933.

claimer iled March 6, 1934, by the assignee, United Engineering cf:Foundry Company. Hereby enters this disclaimer to which is in thefollown words, to, Wit:

1. In a rolling 'm' l, the combination with m said casing, a Workingroll journalled in said chock, and

nected to said casing and While thus connected movable contact with saidbacking roll.

[Qcvlal Gazette March 2?', 1.934.]

WORKING RoLL BALANCE Fon that part of the claims in said specication 0housing provided with a vertically movable casing having a backing rolljournalled therein, of a chock slidabl mounted a member yiel ingly contoand completely from a position engaging said chock for urgmg saidworking roll yieldingly into driving Working roll can then be pulledlaterally through casings 3 Without interference by the balances. Thereis thus provided an adjustable Working roll balance of simpleconstruction and few parts which can easily be disengaged from a Workingroll to permit its removal from the mill housing.

Accordingr to the provisions of the atent statutes, I have explained theprinciple and operation of my invention, and have illustrated anddescribed what I now consider to be its best embodiment. However, Idesire to have it understood that Within the scope of the appendedclaims, the invention may be practiced otherwise than as specificallyillustrated and described.

I claim:

1. In a rolling mill, the combination with a housing provided with avertically movable casing having a backing roll journalled therein, of achock slidably mounted in said casing, a Working roll joui-nailed insaid chock, and a member yieldingly connected to said casing and Whilethus connected movable to and completely from a position engaging saidchock for urging said Working roll yieldingly into driving contact withsaid backing roll.

2. In a rolling mill, the combination with a housing provided with avertically movable casing having a backing roll journalled therein, of achock slidably mounted in said casing, a working roll journalled in saidchock, a member rotatably mounted in said casing for movements to andfrom engagement with said chock, and means for yieldingly urging saidmember toward said Working roll.

In a rolling mill, the combination with a. housing provided with avertically movable casing having' a backing roll journalled therein, ofa chock slidably mounted in said casing, a working roll journalled insaid chock, a sleeve mounted for angular and vertical movements in saidcasing and provided With a lug Which in one angular position of thesleeve engages said chock, and means for yieldingly connecting saidsleeve to said casing for urging the Working roll into driving contactwith the backing roll.

In testimony whereof, I sign my name.

HUBERT E. EWART.

DISCLAI M E R 1,898,007.-Hubert E. Ewm't, Mount Lebanon, Pa.

A BAcKnn-UP ROLLING MILL. Patent dated February 21, 1933.

claimer iled March 6, 1934, by the assignee, United Engineering cf:Foundry Company. Hereby enters this disclaimer to which is in thefollown words, to, Wit:

1. In a rolling 'm' l, the combination with m said casing, a Workingroll journalled in said chock, and

nected to said casing and While thus connected movable contact with saidbacking roll.

[Qcvlal Gazette March 2?', 1.934.]

WORKING RoLL BALANCE Fon that part of the claims in said specication 0housing provided with a vertically movable casing having a backing rolljournalled therein, of a chock slidabl mounted a member yiel ingly contoand completely from a position engaging said chock for urgmg saidworking roll yieldingly into driving

